* [contrib/terraform/openstack] Add worker_allowed_ports
Allow user to define in terraform template which ports and remote
IPs that are allowed to access worker nodes. This is useful when you
don't want to open up whole NodePort range to the outside world, or
ports outside NodePort range.
* Replace `openstack_compute_secgroup_v2` with `openstack_networking_secgroup_v2`
The `openstack_networking_secgroup_v2` resource allow specifications of
both ingress and egress. Nova security groups define ingress rules only.
This change will also allow for more user-friendly specified security
rules, as the different security group resources have different HCL
syntax.
* Add supplementary node groups
To add additional ansible groups to the k8s nodes, such as
`kube-ingress` for running ingress controller pods. Empty by default.
Andreas Holmsten